Fwd: Re: [TAXACOM] A new web site in support of the teaching of Evolution

John Grehan jgrehan at SCIENCEBUFF.ORG
Thu Mar 4 09:13:03 CST 2004

>Date: Thu, 04 Mar 2004 09:12:46 -0500
>To: "P.Hovenkamp" <Hovenkamp at NHN.LEIDENUNIV.NL>
>From: John Grehan <jgrehan at sciencebuff.org>
>Subject: Re: [TAXACOM] A new web site in support of the teaching of  Evolution
>>Peter wrote:
>>Could you give us a few hints about current non-Darwinian evolutionary
>>syntheses? Where published? What main tenets?
>I am aware of only one overall evolutionary synthesis encompassing and
>integrating space, time, and form together as an alternative to Darwinism
>- panbiogeography, although I am also aware that there are also various
>individual non-Darwinian models of form-making such as molecular drive
>(which has been proposed as being compatible with panbiogeographic models
>of form-making).
>I would think that people such as yourself are well aware of that
>alternative and its publication (for those of you new to the subject may
>read as a starting point the 1999 panbiogeography book). As for tenets
>that's a little more problematic. The best I can do is direct you to p. 19
>for the following:
>1. Distribution patterns constitute an empirical database for
>biogeographical analysis;
>2. Distribution patterns provide information about where, when, and how
>animals and plants evolve;
>3. The spatial and temporal component of these distribution patterns can
>be graphically represented;
>4. Testable hypotheses about historical relationships between the
>evolution of distributions and earth history can be derived from
>geographic correlations between distribution graphs and
>geological/geomorphic features.
>Beyond that its all up for grabs. Croizat (1964) noted that
>panbiogeography (as an evolutionary synthesis) had no necessary tenets
>that it must defend.
>>And do you subscribe to one of these alternatives yourself?
>> From the way you kept us informed about your views on human/chimp vs
>> human/orang-utan
>>relationships, I would have inferred that you work very much the way we
>>all do, in a mainly Darwinian paradigm:
>Please characterize the "Darwinian paradigm" as you see it and I might be
>able to answer that precisely.
>>You consider shared derived states as markers for common ancestry;
>This was not an explicit component of Darwin's evolutionary theory, but
>later incorporated. We may all be Darwinians in the general sense of being
>evolutionists, but then we are also all Aristotelians in some way by
>virtue of inheriting Greek philosophy even if we explicitly reject it. As
>for shared derived states being markers for common ancestry, this is the
>general consensus. It might be true. It certainly does not hurt to use it.
>>you maintain an evolutionary view where humans can be more closely
>>related to orang-utans than either is to chimps - apparently, the only
>>point you object to in Darwinism is the explanation of
>>character change by natural selection.
>My own view conflicts with the Darwinian tenets that:
>1. Species evolve out of single centers of origin
>2. Dispersal ability is the key to understanding translation in space and
>3. Biological evolution (form-making) is an externally driven process that
>is either stochastic or selection
>>Is that a correct interpretation of your points of view?
>Yes and no.
>The panbiogeographic synthesis rests on a foundation of space and time
>(biogeography). In that respect it appears to be different from all other
>professed evolutionary syntheses, including Darwinism - which, of course,
>represents 99% of all evolutionists and naturally they reject
>panbiogeography (and sometimes suppress it).
>>Peter Hovenkamp
>>Peter Hovenkamp
>>Nationaal Herbarium Nederland - Leiden
>>Tel. 071-5274732
>Dr. John Grehan
>Director of Science and Collections
>Buffalo Museum of Science
>1020 Humboldt Parkway
>Buffalo, New York 14211-1293
>Voice 716-896-5200 x372
>Fax 716-897-6723
>jgrehan at sciencebuff.org

Dr. John Grehan
Director of Science and Collections
Buffalo Museum of Science
1020 Humboldt Parkway
Buffalo, New York 14211-1293
Voice 716-896-5200 x372
Fax 716-897-6723
jgrehan at sciencebuff.org

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